Arrhenius Equation

[005290099]

I wasn't in class for the Arrhenius equation part and I was wondering if someone could explain it to me?

[MingdaH 3B]

The Arrhenius equation basically just relates the rate constant to temperature and the activation energy of the reaction.

[Jared_Yuge]

More specifically the Arrhenius equation can show us the impact of temperature, a catalyst, energy barrier, and frequency and orientation of collisions, which are all not shown in the rate law.

[Dina Marchenko 2J]

k=A*e^-Ea/RT

This formula helps determine the temperature dependence of reaction rates.
k is the reaction rate of the reaction.
A is a pre-exponential factor and has to do with the collision of the molecule (and if it is properly oriented when it collides in order to react)
Ea is the activation energy, or the energy input needed to activate the reaction
R is the gas constant
T is the temperature in kelvin

Given the information provided for you, you can find any of these unknown variables.

[Sidharth D 1E]

To expand on that, reactions that give a straight line when lnk_r is plotted against 1/T are said to show Arrhenius behavior

[Joowon Seo 3A]

The equation helps us relate temperature, reaction constant, and the activation energy. IF plotting lnk to 1/T the slope is -Ea/R

[kevinolvera1j]

k=A*e^-Ea/RT

This formula helps determine the temperature dependence of reaction rates.
k is the reaction rate of the reaction.
A is a pre-exponential factor and has to do with the collision of the molecule (and if it is properly oriented when it collides in order to react)
Ea is the activation energy, or the energy input needed to activate the reaction
R is the gas constant
T is the temperature in kelvin

Given the information provided for you, you can find any of these unknown variables.

How can you distinguish between A, the pre exponential factor, and A, the reactant such as in [A]?

[vibha gurunathan 1h]

To expand on that, reactions that give a straight line when lnk_r is plotted against 1/T are said to show Arrhenius behavior

What is arrhenius behavior?

[Madelyn Romberg 1H]

Arrhenius behavior is when the graph of 1/kr is linear when plotted against 1/T